Automotive Circuits

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Security Lock with keypad and LCD (PIC16F84A)
L4970A Easy 5V 10A Switching Regulator circuit
opt301 laser receiver
Build A Simple Twin Tee Phase Shift Audio Oscillator and Audio Amplifier
code switching EPROM circuit
TV cascades
Simple Photoresistor Circuit
Use TWH8751 street light control circuit
One of debug circuitry DC motor armature resistance in series starting